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Improved gamma-ray imaging device for precise location of irradiating sources in space

An imaging device and radiation source technology, applied in radiation measurement, measurement device, X/γ/cosmic radiation measurement, etc., can solve the problem that gamma cameras cannot capture visible light images, etc.

Inactive Publication Date: 2011-05-11
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In both cases, the gamma camera cannot take visible light images and the auxiliary camera must be provided

Method used

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  • Improved gamma-ray imaging device for precise location of irradiating sources in space
  • Improved gamma-ray imaging device for precise location of irradiating sources in space
  • Improved gamma-ray imaging device for precise location of irradiating sources in space

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Embodiment Construction

[0051] view now Figure 2A , 2C , 2D, the drawing depicts various views of a gamma imaging device during assembly according to the present invention. it contains with figure 1 The camera described in reference number 1 is very similar to the conventional gamma camera 10. it consists of Figure 2A Composed of a pinhole collimator gamma camera. exist Figure 2B In this gamma camera is coded mask, this image is not part of the present invention. The gamma camera 10 has a front face 11 at the end of the pinhole 12 . exist Figure 2C , 2D In , the front face of the pinhole gamma camera is not shown. The gamma camera 10 captures a gamma image of an observation scene 17 .

[0052] The gamma camera 10 has a line of sight axis x1'. The gamma imaging device also includes an auxiliary camera 15 sensitive to visible light or near-visible light (such as infrared). The auxiliary camera 15 is preferably a digital camera. The secondary axis camera 15 comprises an optical axis x2'...

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Abstract

The invention relates to a gamma-ray imaging device comprising a gamma-camera (10) intended for capturing a gamma-ray image, called a gamma-image, of an observed scene (17), said gamma-camera being provided with a front face (11) and possessing a line of sight (x1'), together with an auxiliary camera (15) intended to capture a visible-light image of the observed scene (17). The auxiliary camera (15) is placed ahead of the front face (11) of the gamma-camera (10) and has an optical axis (x2') which is substantially coincident with the line of sight (x1') of the gamma-camera (10) so that the visible-light image and the gamma-image are captured almost simultaneously with the same line of sight.

Description

technical field [0001] The present invention relates to an enhanced gamma imaging device for precise spatial positioning of radiation sources, especially for the preparation of procedures such as maintenance, dismantling or inspection operations in radiation environments. Such devices include a gamma camera. Background technique [0002] Since the early 1990s, the applicant has developed a relatively small gamma imaging device, ALADIN, for locating radiation sources emitting gamma rays. Such an imaging device outputs a final image formed from a gamma image in which at least one radiation source is represented as a false-colored spot superimposed on a visible or quasi-visible image of the observed scene. The image of the radiation source consists of an intensity distribution of gamma rays received by the gamma camera, and the visible or quasi-visible image of the observed scene is formed by the gamma camera itself or by an auxiliary visible light interacting with the gamma c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/164
CPCG01T1/1642
Inventor 克里斯多佛·勒果阿乐查里·马埃
Owner COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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